1151497Sru/* $NetBSD: mount_msdos.c,v 1.18 1997/09/16 12:24:18 lukem Exp $ */ 2151497Sru 3151497Sru/* 4151497Sru * Copyright (c) 1994 Christopher G. Demetriou 5151497Sru * All rights reserved. 6151497Sru * 7151497Sru * Redistribution and use in source and binary forms, with or without 8151497Sru * modification, are permitted provided that the following conditions 9151497Sru * are met: 10151497Sru * 1. Redistributions of source code must retain the above copyright 11151497Sru * notice, this list of conditions and the following disclaimer. 12151497Sru * 2. Redistributions in binary form must reproduce the above copyright 13151497Sru * notice, this list of conditions and the following disclaimer in the 14151497Sru * documentation and/or other materials provided with the distribution. 15151497Sru * 3. All advertising materials mentioning features or use of this software 16151497Sru * must display the following acknowledgement: 17151497Sru * This product includes software developed by Christopher G. Demetriou. 18151497Sru * 4. The name of the author may not be used to endorse or promote products 19151497Sru * derived from this software without specific prior written permission 20151497Sru * 21151497Sru * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22151497Sru * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23151497Sru * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24151497Sru * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25151497Sru * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26151497Sru * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27151497Sru * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28151497Sru * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29151497Sru * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30151497Sru * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31151497Sru */ 32151497Sru 33151497Sru#ifndef lint 34151497Srustatic const char rcsid[] = 35151497Sru "$FreeBSD$"; 36151497Sru#endif /* not lint */ 37151497Sru 38151497Sru#include <sys/param.h> 39151497Sru#include <sys/mount.h> 40151497Sru#include <sys/stat.h> 41151497Sru#include <sys/iconv.h> 42151497Sru#include <sys/linker.h> 43151497Sru#include <sys/module.h> 44151497Sru 45151497Sru#include <ctype.h> 46151497Sru#include <err.h> 47151497Sru#include <grp.h> 48151497Sru#include <locale.h> 49151497Sru#include <pwd.h> 50151497Sru#include <stdio.h> 51151497Sru/* must be after stdio to declare fparseln */ 52151497Sru#include <libutil.h> 53151497Sru#include <stdlib.h> 54151497Sru#include <string.h> 55151497Sru#include <sysexits.h> 56151497Sru#include <unistd.h> 57151497Sru 58151497Sru#include "mntopts.h" 59151497Sru 60151497Srustatic gid_t a_gid(char *); 61151497Srustatic uid_t a_uid(char *); 62151497Srustatic mode_t a_mask(char *); 63151497Srustatic void usage(void) __dead2; 64151497Srustatic int set_charset(struct iovec **iov, int *iovlen, const char *, const char *); 65151497Sru 66151497Sruint 67151497Srumain(int argc, char **argv) 68151497Sru{ 69151497Sru struct iovec *iov = NULL; 70151497Sru int iovlen = 0; 71151497Sru struct stat sb; 72151497Sru int c, set_gid, set_uid, set_mask, set_dirmask; 73151497Sru char *dev, *dir, mntpath[MAXPATHLEN], *csp; 74151497Sru char fstype[] = "msdosfs"; 75151497Sru char errmsg[255] = {0}; 76151497Sru char *cs_dos = NULL; 77151497Sru char *cs_local = NULL; 78151497Sru mode_t mask = 0, dirmask = 0; 79151497Sru uid_t uid = 0; 80151497Sru gid_t gid = 0; 81151497Sru 82151497Sru set_gid = set_uid = set_mask = set_dirmask = 0; 83151497Sru 84151497Sru while ((c = getopt(argc, argv, "sl9u:g:m:M:o:L:D:W:")) != -1) { 85151497Sru switch (c) { 86151497Sru case 's': 87151497Sru build_iovec(&iov, &iovlen, "shortnames", NULL, (size_t)-1); 88151497Sru break; 89151497Sru case 'l': 90151497Sru build_iovec(&iov, &iovlen, "longnames", NULL, (size_t)-1); 91151497Sru break; 92151497Sru case '9': 93151497Sru build_iovec_argf(&iov, &iovlen, "nowin95", "", (size_t)-1); 94151497Sru break; 95151497Sru case 'u': 96151497Sru uid = a_uid(optarg); 97151497Sru set_uid = 1; 98151497Sru break; 99151497Sru case 'g': 100151497Sru gid = a_gid(optarg); 101151497Sru set_gid = 1; 102151497Sru break; 103151497Sru case 'm': 104151497Sru mask = a_mask(optarg); 105151497Sru set_mask = 1; 106151497Sru break; 107151497Sru case 'M': 108151497Sru dirmask = a_mask(optarg); 109151497Sru set_dirmask = 1; 110151497Sru break; 111151497Sru case 'L': { 112151497Sru const char *quirk = NULL; 113151497Sru if (setlocale(LC_CTYPE, optarg) == NULL) 114151497Sru err(EX_CONFIG, "%s", optarg); 115151497Sru csp = strchr(optarg,'.'); 116151497Sru if (!csp) 117151497Sru err(EX_CONFIG, "%s", optarg); 118151497Sru quirk = kiconv_quirkcs(csp + 1, KICONV_VENDOR_MICSFT); 119151497Sru build_iovec_argf(&iov, &iovlen, "cs_local", quirk); 120151497Sru cs_local = strdup(quirk); 121151497Sru } 122151497Sru break; 123151497Sru case 'D': 124151497Sru cs_dos = strdup(optarg); 125151497Sru build_iovec_argf(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1); 126151497Sru break; 127151497Sru case 'o': { 128151497Sru char *p = NULL; 129151497Sru char *val = strdup(""); 130151497Sru p = strchr(optarg, '='); 131151497Sru if (p != NULL) { 132151497Sru free(val); 133151497Sru *p = '\0'; 134151497Sru val = p + 1; 135151497Sru } 136151497Sru build_iovec(&iov, &iovlen, optarg, val, (size_t)-1); 137151497Sru } 138151497Sru break; 139151497Sru case 'W': 140151497Sru if (strcmp(optarg, "iso22dos") == 0) { 141151497Sru cs_local = strdup("ISO8859-2"); 142151497Sru cs_dos = strdup("CP852"); 143151497Sru } else if (strcmp(optarg, "iso72dos") == 0) { 144151497Sru cs_local = strdup("ISO8859-7"); 145151497Sru cs_dos = strdup("CP737"); 146151497Sru } else if (strcmp(optarg, "koi2dos") == 0) { 147151497Sru cs_local = strdup("KOI8-R"); 148151497Sru cs_dos = strdup("CP866"); 149151497Sru } else if (strcmp(optarg, "koi8u2dos") == 0) { 150151497Sru cs_local = strdup("KOI8-U"); 151151497Sru cs_dos = strdup("CP866"); 152151497Sru } else { 153151497Sru err(EX_NOINPUT, "%s", optarg); 154151497Sru } 155151497Sru build_iovec(&iov, &iovlen, "cs_local", cs_local, (size_t)-1); 156151497Sru build_iovec(&iov, &iovlen, "cs_dos", cs_dos, (size_t)-1); 157151497Sru break; 158151497Sru case '?': 159151497Sru default: 160151497Sru usage(); 161151497Sru break; 162151497Sru } 163151497Sru } 164151497Sru 165151497Sru if (optind + 2 != argc) 166151497Sru usage(); 167151497Sru 168151497Sru if (set_mask && !set_dirmask) { 169151497Sru dirmask = mask; 170151497Sru set_dirmask = 1; 171151497Sru } 172151497Sru else if (set_dirmask && !set_mask) { 173151497Sru mask = dirmask; 174151497Sru set_mask = 1; 175151497Sru } 176151497Sru 177151497Sru dev = argv[optind]; 178151497Sru dir = argv[optind + 1]; 179151497Sru 180151497Sru if (cs_local != NULL) { 181151497Sru if (set_charset(&iov, &iovlen, cs_local, cs_dos) == -1) 182151497Sru err(EX_OSERR, "msdosfs_iconv"); 183151497Sru build_iovec_argf(&iov, &iovlen, "kiconv", ""); 184151497Sru } else if (cs_dos != NULL) { 185151497Sru build_iovec_argf(&iov, &iovlen, "cs_local", "ISO8859-1"); 186151497Sru if (set_charset(&iov, &iovlen, "ISO8859-1", cs_dos) == -1) 187151497Sru err(EX_OSERR, "msdosfs_iconv"); 188151497Sru build_iovec_argf(&iov, &iovlen, "kiconv", ""); 189151497Sru } 190151497Sru 191151497Sru /* 192151497Sru * Resolve the mountpoint with realpath(3) and remove unnecessary 193151497Sru * slashes from the devicename if there are any. 194151497Sru */ 195151497Sru if (checkpath(dir, mntpath) != 0) 196151497Sru err(EX_USAGE, "%s", mntpath); 197151497Sru (void)rmslashes(dev, dev); 198151497Sru 199151497Sru if (!set_gid || !set_uid || !set_mask) { 200151497Sru if (stat(mntpath, &sb) == -1) 201151497Sru err(EX_OSERR, "stat %s", mntpath); 202151497Sru 203151497Sru if (!set_uid) 204151497Sru uid = sb.st_uid; 205151497Sru if (!set_gid) 206151497Sru gid = sb.st_gid; 207151497Sru if (!set_mask) 208151497Sru mask = dirmask = 209151497Sru sb.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); 210151497Sru } 211151497Sru 212151497Sru build_iovec(&iov, &iovlen, "fstype", fstype, (size_t)-1); 213151497Sru build_iovec(&iov, &iovlen, "fspath", mntpath, (size_t)-1); 214151497Sru build_iovec(&iov, &iovlen, "from", dev, (size_t)-1); 215151497Sru build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); 216151497Sru build_iovec_argf(&iov, &iovlen, "uid", "%d", uid); 217151497Sru build_iovec_argf(&iov, &iovlen, "gid", "%u", gid); 218151497Sru build_iovec_argf(&iov, &iovlen, "mask", "%u", mask); 219151497Sru build_iovec_argf(&iov, &iovlen, "dirmask", "%u", dirmask); 220151497Sru 221151497Sru if (nmount(iov, iovlen, 0) < 0) { 222151497Sru if (errmsg[0]) 223151497Sru err(1, "%s: %s", dev, errmsg); 224151497Sru else 225151497Sru err(1, "%s", dev); 226151497Sru } 227151497Sru 228151497Sru exit (0); 229151497Sru} 230151497Sru 231151497Srugid_t 232151497Srua_gid(char *s) 233151497Sru{ 234151497Sru struct group *gr; 235151497Sru char *gname; 236151497Sru gid_t gid; 237151497Sru 238151497Sru if ((gr = getgrnam(s)) != NULL) 239151497Sru gid = gr->gr_gid; 240151497Sru else { 241151497Sru for (gname = s; *s && isdigit(*s); ++s); 242151497Sru if (!*s) 243151497Sru gid = atoi(gname); 244151497Sru else 245151497Sru errx(EX_NOUSER, "unknown group id: %s", gname); 246151497Sru } 247151497Sru return (gid); 248151497Sru} 249151497Sru 250151497Sruuid_t 251151497Srua_uid(char *s) 252151497Sru{ 253151497Sru struct passwd *pw; 254151497Sru char *uname; 255151497Sru uid_t uid; 256151497Sru 257151497Sru if ((pw = getpwnam(s)) != NULL) 258151497Sru uid = pw->pw_uid; 259151497Sru else { 260151497Sru for (uname = s; *s && isdigit(*s); ++s); 261151497Sru if (!*s) 262151497Sru uid = atoi(uname); 263151497Sru else 264151497Sru errx(EX_NOUSER, "unknown user id: %s", uname); 265151497Sru } 266151497Sru return (uid); 267151497Sru} 268151497Sru 269151497Srumode_t 270151497Srua_mask(char *s) 271151497Sru{ 272151497Sru int done, rv; 273151497Sru char *ep; 274151497Sru 275151497Sru done = 0; 276151497Sru rv = -1; 277151497Sru if (*s >= '0' && *s <= '7') { 278151497Sru done = 1; 279151497Sru rv = strtol(optarg, &ep, 8); 280151497Sru } 281151497Sru if (!done || rv < 0 || *ep) 282151497Sru errx(EX_USAGE, "invalid file mode: %s", s); 283151497Sru return (rv); 284151497Sru} 285151497Sru 286151497Sruvoid 287151497Sruusage(void) 288151497Sru{ 289151497Sru fprintf(stderr, "%s\n%s\n%s\n", 290151497Sru "usage: mount_msdosfs [-9ls] [-D DOS_codepage] [-g gid] [-L locale]", 291151497Sru " [-M mask] [-m mask] [-o options] [-u uid]", 292151497Sru " [-W table] special node"); 293151497Sru exit(EX_USAGE); 294151497Sru} 295151497Sru 296151497Sruint 297151497Sruset_charset(struct iovec **iov, int *iovlen, const char *cs_local, const char *cs_dos) 298151497Sru{ 299151497Sru int error; 300151497Sru 301151497Sru if (modfind("msdosfs_iconv") < 0) 302151497Sru if (kldload("msdosfs_iconv") < 0 || modfind("msdosfs_iconv") < 0) { 303151497Sru warnx("cannot find or load \"msdosfs_iconv\" kernel module"); 304151497Sru return (-1); 305151497Sru } 306151497Sru 307151497Sru build_iovec_argf(iov, iovlen, "cs_win", ENCODING_UNICODE); 308151497Sru error = kiconv_add_xlat16_cspairs(ENCODING_UNICODE, cs_local); 309151497Sru if (error) 310151497Sru return (-1); 311151497Sru if (cs_dos != NULL) { 312151497Sru error = kiconv_add_xlat16_cspairs(cs_dos, cs_local); 313151497Sru if (error) 314151497Sru return (-1); 315151497Sru } else { 316151497Sru build_iovec_argf(iov, iovlen, "cs_dos", cs_local); 317151497Sru error = kiconv_add_xlat16_cspair(cs_local, cs_local, 318151497Sru KICONV_FROM_UPPER | KICONV_LOWER); 319151497Sru if (error) 320151497Sru return (-1); 321151497Sru } 322151497Sru 323151497Sru return (0); 324151497Sru} 325151497Sru